Yiic shell doesn't start anymore

Hello.
my Yii application (projcontrol is the app folder name) was set up and worked fine last friday.
I use alternaterbac, so have to work with yiic shell a lot. Everything was just fine, and today when i try to start yiic shell, nothing is happened

I had the same problem. The reason was, that i made the application's default action only accessible for logged in users. I don't know of any workaround except disabling access rules while i want to work with yiic shell.

Thank you all, guys! i have changed default controller in config to the rbac using controller, and thats the reason. i'd never get it by myself without your help. btw i'd like to know if this feature is represented in any FAQ? if no — maybe it'll be nice to add it there?